Gonz wrote:
If the lens/body was moved in a perfect parallel manner, then you are right, 1mm of body/lens movement == 1mm of subject movement.
Nope, I'm afraid that's only true at 1:1 magnification. See my explanation in my most recent reply to Bob for a simple test that you can perform that disproves this statement.
If you deviate from the parallel motion, then there is a magnification involved which includes the angle of the motion as well as the field of view of the lens. With long lenses, the FOV is very small, therefor any small andular movement seems highly magnified.
That *is* true, yes. S
